Compromised gateway (backdoor) in October CMS

Published: 2022-02-23
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-23655
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
October CMS
Web applications / CMS

Vendor OctoberCMS

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Embedded malicious code (backdoor)

EUVDB-ID: #VU60798

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-23655

CWE-ID: CWE-506 - Embedded Malicious Code

Exploit availability: No


The vulnerability allows a remote attacker to gain unauthorized access to the application.

The vulnerability exists due to a project fork of October CMS v1.0 is using a compromised gateway to access the October CMS marketplace service. The compromised gateway captures the personal/business information of users and authors, including private source code files. It was also disclosed that captured plugin files are freely redistributed to other users without authorization.

The issue affects authors of plugins and themes listed on the October CMS marketplace where an end-user will inadvertently expose authors to potential financial loss by entering their private license key into a compromised server.

Note, the vulnerability is being exploited in the wild.


Install updates from vendor's website.

Vulnerable software versions

October CMS: 1.0.474 - 1.1.10

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.